PreprintCC BY 4.0arXiv
Radiative transitions of hybrid mesons
Abstract
Radiative transitions of hybrid mesons probe nonperturbative gluodynamics, particularly the interplay between quark spin and gluonic excitations, and are of direct relevance to the search for exotic hadrons at Jefferson Lab. We calculate these transitions across the lowest charmonium-hybrid multiplet in a constituent gluon model based on Coulomb-gauge QCD in the heavy quark expansion. The results for Y→ηcγ and Y→ χc0γ overlap the width obtained in quenched lattice computations, whereas ηc1→ J/ψγ is substantially below the corresponding lattice estimate.
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BibTeX
@misc{jafarzade2026radiative,
title = {{Radiative transitions of hybrid mesons}},
author = {Shahriyar Jafarzade and Eric S. Swanson},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.22088},
eprint = {2610.22088},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.22088},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Radiative transitions of hybrid mesons
AU - Shahriyar Jafarzade
AU - Eric S. Swanson
PY - 2026
DA - 2026/10/15
PB - arXiv
DO - 10.48550/arxiv.2610.22088
UR - https://arxiv.org/abs/2610.22088
AB - Radiative transitions of hybrid mesons probe nonperturbative gluodynamics, particularly the interplay between quark spin and gluonic excitations, and are of direct relevance to the search for exotic hadrons at Jefferson Lab. We calculate these transitions across the lowest charmonium-hybrid multiplet in a constituent gluon model based on Coulomb-gauge QCD in the heavy quark expansion. The results for Y→η_cγ and Y→ χ_c0γ overlap the width obtained in quenched lattice computations, whereas η_c1→ J/ψγ is substantially below the corresponding lattice estimate.
ER -